Electromagnetic Interference Caused by Iraqi 400kV Transmission Lines on Buried Oil Pipelines
Engineering and Technology Journal,
2010, Volume 28, Issue 24, Pages 6937-6953
AbstractThe electromagnetic interference caused by power transmission lines to oil and gas buried pipelines is under investigation for many years. Especially during fault conditions, large currents and voltages are induced on the pipelines that may pose danger to working personnel or may accelerate the corrosion of the pipelin’es metal. In this research, the Joule effect of eddy currents induced in the oil buried
pipelines due to the magnetic fields produced by nearby 400kV transmission lines in the South of Iraq have been computed. A computational model based on 2D finite element approach to calculate the heat generation rate. The influence of different earth resistivities for homogeneous earth model during steady state and
fault conditions is analyzed. A mitigation system using mitigation wires has been simulated to reduce induced eddy current heating effects to the safety limit.
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